Lamp shade support



Nov. 24, 1936. J QRQASDALE I 2,061,757

LAMP SHADE SUPPORT Filed Nov. 10, 1934 1110672201. @MEMMK Patented Nov. 24, 1936 Parent orrics LAW SHADE SUPPURT Jlohn P. Croasdale, Berwyn, Pa.

Application November 10, 1934, Serial No. 752,423

2 Claims.

The invention relates to lamp shade supports. The object is to provide shade supporting means or holders, adapted to be disengageably associated with an electric light bulb, whether the bulb extends upwardly from its shank or downwardly from its shank, and without disengaging the shank from its socket.

It is known that electric fixtures are now in common use, some, in which the light bulb extends upwardly from its socket, while, in others, the light bulb extends downwardly from its socket. The shades commonly used with these light bulbs are flared downwardly and are provided with spring clamps adapted to slide over the top of the bulb, when the bulb extends upwardly from its shank. When, however, the bulb extends downwardly from its shank and socket, in order to maintain the shade in its proper position with the flare downwardly, it is common practice to disengage the bulb shank from its socket and insert the shank through a central opening in the shade supporting frame, before engaging the shank with the socket.

The present invention comprises a shade supporting frame, including bulb engaging means adapted to permit the passage of the bulb into engagement with the engaging means, either from the upper side, or from the underside of said engaging means. By such arrangement the shade can be properly associated with the bulb, whether it extends upwardly or downwardly from its shank, without separating the shank from its socket.

Referring to the drawing, which illustrates, merely by way of example, a preferred embodiment of the invention:

Fig. 1 is an elevation in part section with the lamp shank extending upwardly.

Fig. 2 is a similar View with the shank extending downwardly.

Fig. 3 is a plan view of the arrangement shown in Fig. 1.

Fig. 4 is a section on line 4, 4 of Fig. 2.

Similar numerals refer to similar parts throughout the several views.

In the example shown in the drawing, the shade 6 is shown in vertical section with the side walls flaring downwardly. The margin of the upper or more contracted end of the shade is provided with a metal reinforcing ring or frame 7. To the diametrically opposite sides of the ring or frame l, are secured, by any suitable means, or in any suitable manner, as at 9 and it, the spring wires or strips of metal l I and i2. These extensions H and i2 terminate in spiral formations i3 and M. These spirals are shaped or bent into concave formations to provide resilient oppositely disposed pockets or cups for receiving the opposite convex sides of the lamp bulb [15. These spirals are preferably developed from opposite sides of the bulb as shown, so that the innermost turns are the furthest from the extensions l I and 52, so that the benefit of the resilience of approximately the full extension or length of the wires from the ring or frame "F to the point of initial contact of the bulb with said innermost turn, is secured, in the operation of bringing the clamping spirals into operative or clamping position with respect to the bulb, and so that said cooperation between clamp and bulb is as readily secured when the shade with its clamping spirals is pushed upwardly upon the bulb, that is, when the shank i6 is uppermost, as in Fig. 1, or when it is pushed downwardly upon the bulb, when the shank it is lowermost, as in Fig. 2.

It will be especially noted that the points 9 and it of wire connection to the frame I, are

spaced apart a distance substantially greater than the maximum diameter of the lamp bulb, and that there are no intervening formations or obstructions to the free passage of the lamp bulb through the smaller end of the shade. In other words, the shade-supporting frame provides a free unobstructed passage way for the lamp bulb, either through the bottom or through the top of the lamp shade, into cooperative position with respect to the clamping spirals.

The important feature of the invention is that the clamping elements shall have extensions conforming to the contour of the lines of engagement with bulbs varying in size and shape. The number and shape of the extensions or of the convolutions are of secondary importance, so long as these extensions exert a yielding pressure sufiicient to permit and maintain the bulb in desired engaging relationship with said clamping means, and which shall permit the insertion of the bulb through either end of the shade.

The shade to which this invention is applicable may obviously vary widely as to size and shape.

What I claim is:

1. A lamp shade support having lamp clamping means associated therewith, comprising two oppositely acting resilient spiral concavo-convex formations adapted to engage the opposite sides of the spherical portion of the lamp throughout their spiral extensions.

2. A lamp shade support having lamp clampe ing means associated therewith, comprising two oppositely acting resilient spiral concavo-convex formations adapted to engage the opposite sides of the spherical portion of the lamp throughout their spiral extensions, said spiral formations developing from the center outwardly, the free ends being outermost.

JNO. P. CROASDALE. 

